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36 CM Rowe-Ackermann Schmidt Astrograph (RASA 36)

1,601,613.00 excl. 18% GST

  • A breakthrough 36 cm aperture, f/2.2 optical system designed for professional applications that require both a wide field of view and resolution, such as space surveillance and other scientific applications
  • 4-element lens group utilizes extra-low dispersion (ED) glass for images free of false color, coma, and field curvature, the Rowe-Ackermann Schmidt Astrograph (RASA) 36 cm is also an excellent choice for advanced astroimaging
  • 60 mm optimized image circle maintains pinpoint stars to the far corners of the largest available sensors
  • Extended spectral range takes advantage of sensor response in the 700-900 nm range, allowing a brighter overall signal to be detected
  • Redesigned focusing system minimizes focus shifting or other unwanted motion of the primary mirror, enabling easy and stable focus

Available on backorder

Optical Design Rowe-Ackermann Schmidt Astrograph
Aperture 355.6mm (14″)
Focal Length 790mm (31.1″)
Focal Ratio f/2.2
Central obstruction diameter 158mm (6.22″)(44% of aperture diameter)
Light Gathering Power (Compared to human eye) 2581X
Resolution (Rayleigh) 0.39 arc seconds
Resolution (Dawes) 0.36 arc seconds
Image circle 60.1mm (2.36″) Ø, 4.4°
Useable field 70mm (2.75″) Ø, 5.1°, only minimal performance loss at edge of FOV
Wavelength range 400 – 900 nm
Spot size < 6.3 μm RMS across FOV
Optical coatings Enhanced aluminum, XLT multi-coatings used throughout
Off-axis Illumination 83% at 30mm (1.18″) off-axis
Optical window 104mm (4.09″) Ø
Back focus with included camera adapter 55mm (2.16″)
Back focus from top of threaded collar 77.5mm (3.05″)
Optical Tube Aluminum
Optical Tube Length 1079.5mm (42.5″)
Optical Tube Diameter 406.4mm (16″)
Focuser New focuser design, minimizes focus shift
Finderscope Not included
Optical Tube Weight 75 lbs (34.02 kg)
Other features Ventilation fan, dual dovetail mounting bars
Included items 48mm (1.89″) camera adapter, fan battery pack


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